Enzymatic reactions [BR:br08201]
1. Oxidoreductase reactions
1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
1.14.15 With reduced iron-sulfur protein as one donor, and incorporation of one atom of oxygen into the other donor
1.14.15.6
R04676 17alpha,20alpha-Dihydroxycholesterol + 2 Oxygen + 4 H+ + 4 Reduced adrenal ferredoxin <=> 17alpha-Hydroxypregnenolone + 4-Methylpentanal + 3 H2O + 4 Oxidized adrenal ferredoxin